add alfplayer's libredbdiff script

1 files changed, 141 insertions, 0 deletions

diff --git a/src/abslibre-tools/libredbdiff b/src/abslibre-tools/libredbdiff
new file mode 100755
index 0000000..67b3245
--- /dev/null
+++ b/src/abslibre-tools/libredbdiff
@@ -0,0 +1,141 @@
+#!/bin/bash
+
+name="Libredbdiff"
+
+baseconfpath="/etc/libredbdiff"
+basedbpath="/var/lib/libredbdiff"
+
+conffile="$baseconfpath/pacman.conf.parabola"
+conffilearch="$baseconfpath/pacman.conf.archlinux"
+
+dbpath="$basedbpath/pacman.parabola"
+dbpatharch="$basedbpath/pacman.archlinux"
+
+mirrorlist="$baseconfpath/mirrorlist.parabola"
+mirrorlistarch="$baseconfpath/mirrorlist.archlinux"
+
+mirror='http://repo.parabolagnulinux.org/$repo/os/$arch'
+mirrorarch='http://mirrors.kernel.org/archlinux/$repo/os/$arch'
+
+
+error() { echo -e "Error. $@" > /dev/stderr ; exit 1; }
+
+if [[ $# == 1 ]] ; then
+  [[ $1 == -n ]] && UPDATE=0
+  [[ $1 == -h ]] && { echo -e "${name}. Show [libre] packages that need to be updated from Arch repositories.\n\nUsage:\nlibredbdiff\t\tInitialize (first run) or update pacman databases\nlibredbdiff -n\t\tPrint results" ; exit 0 ; }
+elif [[ $# != 0 ]] ; then
+  error "Bad arguments. Nothing done."
+else
+  UPDATE=1
+fi
+
+if (( $UPDATE )) ; then
+  [[ $EUID != 0 ]] && { error "To initialize $name or update $name pacman databases, the script must be run as root. Nothing done." ; }
+ 
+  [[ -d "$baseconfpath" && -d "$basedbpath" && -d "$dbpath" && -d "$dbpatharch" && -e "${conffile}" && -e "${conffilearch}" && -e "${mirrorlist}" && -e  "${mirrorlist}" ]] || { echo "${name} files are missing. Initializing." ; init=1 ; }
+
+  createdir() {
+    if [[ ! -e $1 ]] ; then
+      echo "Creating directory $1"
+      mkdir "$1" || error "Failed to create directory $1. Exiting."
+    else
+      [[ $init ]] && echo "Warning. ${1} already exists. Skipping."
+    fi
+  }
+  createdir "$baseconfpath"
+  createdir "$basedbpath"
+  createdir "$dbpath"
+  createdir "$dbpatharch"
+
+  downloadfile() {
+    if [[ ! -e $1 ]] ; then
+      echo "$2"
+      if wget -q "$3" -O "$1"; then
+	return 255
+      else
+        error "Failed to download ${1}. Exiting."
+      fi
+    else
+      [[ $init ]] && echo "Warning. ${1} already exists. Skipping."
+    fi
+  }
+  downloadfile "${conffile}" "Downloading Parabola pacman.conf" "https://projects.parabolagnulinux.org/abslibre.git/plain/libre/pacman/pacman.conf.x86_64"
+
+  downloadfile "${conffilearch}" "Downloading Arch pacman.conf" "https://projects.archlinux.org/svntogit/packages.git/plain/pacman/trunk/pacman.conf.x86_64"
+  if [[ $? == 255 ]] ; then
+    echo "Setting Arch mirrorlist file in ${conffilearch}"
+    sed -i "s|/etc/pacman\.d/mirrorlist$|$baseconfpath/mirrorlist.archlinux|" "${conffilearch}"
+  fi
+
+  setmirror() {
+    local distro="$1"
+    local mirror="$2"
+    local mirrorlist="$3"
+    [[ $init ]] && [[ $mirror ]] && {
+      mirrorescaped="${mirror//./\\.}" ; mirrorescaped="${mirrorescaped//\$/\\$}"
+        echo "Setting ${mirror} as the only enabled ${distro} mirror." && \
+          sed -i 's|^#\(Server = '"${mirrorescaped}"'\)$|\1|' "${mirrorlist}"
+    }
+  }
+
+  downloadfile "${mirrorlist}" "Downloading Parabola mirrorlist" "https://repo.parabolagnulinux.org/mirrorlist.txt"
+  if [[ $? == 255 ]] ; then
+    sed -i 's|^Server|#Server|' "${mirrorlist}"
+    setmirror "Parabola" "$mirror" "$mirrorlist"
+  fi
+
+  downloadfile "${mirrorlistarch}" "Downloading Arch mirrorlist" "https://projects.archlinux.org/svntogit/packages.git/plain/pacman-mirrorlist/trunk/mirrorlist"
+  if [[ $? == 255 ]] ; then
+    setmirror "Arch" "$mirrorarch" "$mirrorlistarch"
+  fi
+
+  echo -e "\nSynchronizing $name pacman databases for Parabola"
+  pacman --config "${conffile}" -b "${dbpath}" -Sy || error "Failed to synchronize pacman database for Parabola. Exiting."
+
+  echo -e "\nSynchronizing $name pacman databases for Arch"
+  pacman --config "${conffilearch}" -b "${dbpatharch}" -Sy || error "Failed to synchronize pacman database for Arch. Exiting."
+
+  echo
+  echo "$name pacman databases are updated. $name is ready. Run libredbdiff -n to print results."
+  exit 0
+else
+  filenotfound() {
+	  [[ ! -r $1 ]] && { error "Could not read $1. Nothing done.\nIt may be necessary to run libredbdiff without arguments as root to initialize ${name}." ; }
+  }
+  filenotfound "${dbpath}"
+  filenotfound "${dbpatharch}"
+  filenotfound "${conffile}"
+  filenotfound "${conffilearch}"
+  filenotfound "${mirrorlist}"
+  filenotfound "${mirrorlistarch}"
+fi
+
+unset provides ver verarch
+declare -Ax provides ver verarch
+
+comparepkgs() {
+  if [[ ${verarch["$pkgname"]} ]] ; then
+    cmp=$(vercmp ${ver["$pkgname"]} ${verarch["$pkgname"]})
+    [[ $cmp -lt 0 ]] && echo "${pkgname} needs update from the Arch package of the same name. Versions: ${ver["$pkgname"]} - ${verarch["$pkgname"]}"
+  elif [[ ${provides["$pkgname"]} ]] ; then
+    for provide in ${provides["$pkgname"]} ; do
+      [[ ${verarch["$provide"]} ]] && {
+        cmp=$(vercmp "${ver["$pkgname"]}" "${verarch["$provide"]}")
+        [[ $cmp -lt 0 ]] && echo "${pkgname} may need update from provide candidate ${provide}. Versions: ${ver["$pkgname"]} - ${verarch["$provide"]}"
+      }
+    done
+  else
+	  echo "Could not find candidate to compare ${pkgname}"
+  fi
+}
+
+while read -a line ; do
+  verarch["${line[0]}"]="${line[1]}"
+done < <(pacman --dbpath "${dbpatharch}" --config "${conffilearch}" -Ss | grep -v '^ ' | awk -F/ '{print $2}')
+
+expac -b "${dbpath}" -c "${conffile}" -Ss '%r/%n %v %S' | awk -F/ '$1 == "libre" {print $2}' | while read -a line ; do
+  ver["${line[0]}"]="${line[1]}"
+  provides[${line[0]}]="${line[@]:2}"
+  pkgname=${line[0]}
+  comparepkgs
+done